text: import sys
  from contextlib import contextmanager
  from StringIO import StringIO
  
  
  @contextmanager
  def captured_output():
      new_out, new_err = StringIO(), StringIO()
      old_out, old_err = sys.stdout, sys.stderr
      try:
          sys.stdout, sys.stderr = new_out, new_err
          yield sys.stdout, sys.stderr
      finally:
          sys.stdout, sys.stderr = old_out, old_err